MG1 Burgmann seals
HQ1 seals ( the MG series )are the most commonly used. The bellows is not subjected to any torsional stress and its ingenious design incorporates several functions, as seal face carrier, secondary...

Product Summary

METAL BELLOWS SEALS continue to have success as a core sealing technology and have gained popularity recently in new innovative sealing technologies such as high-temperature non-contacting gas lubricated seals and high-temperature corrosion resistant seals. This is especially important in the oil, gas and chemical industries where pumping liquid from one area to another is complicated by great temperature extremes.
The metal bellows seal provides a leak-tight seal once the door is closed to prevent temperature changes. By utilizing metal, the mechanical seal ensures survival through the cryogenic temperatures of the chamber; certain materials like rubber become brittle at extremely cold temperatures. Because edge welded bellows technology is extremely light-weight in comparison to other hermetic seal technologies, the bellows is able to keep the overall weight of the system to a minimum.
A welded metal bellows seal is made through a process of stamping disc-like plates in specific contoured shapes and welding them in pairs at the inside diameters to form individual convolutions of the bellows. A series of convolutions is then stacked and welded at the outside diameters to form the bellows capsule. Suitable end-fittings complete the assembly.